When comparing LÖVE 2D vs Genome2D, the Slant community recommends LÖVE 2D for most people. In the question“What are the best 2D game engines?”LÖVE 2D is ranked 1st while Genome2D is ranked 49th. The most important reason people chose LÖVE 2D is:

The [LÖVE forums][1] are extremely helpful. With people checking the forums every day, it won't take long to receive answer to your questions on the Support board, receive feedback on games you post in the Projects board, as well as have a chat about the LÖVE engine while learning tricks to use in the very active General board.
If you need an immediate answer though, or just want to chat, there is a very active and helpful [IRC channel][2].
[1]: https://www.love2d.org/forums/
[2]: http://webchat.oftc.net/?channels=love

Pros

Pro

Active and very friendly community

The LÖVE forums are extremely helpful. With people checking the forums every day, it won't take long to receive answer to your questions on the Support board, receive feedback on games you post in the Projects board, as well as have a chat about the LÖVE engine while learning tricks to use in the very active General board.

If you need an immediate answer though, or just want to chat, there is a very active and helpful IRC channel.

Pro

Uses the fantastic Lua for scripting

Lua is an embeddable scripting language designed to be lightweight, fast yet powerful. It is used in major titles such as Civilization as well as a lot of indie games.

Lua is very popular because it provides "meta language" features. You can implement object-oriented structures, or pure procedural functions, etc. It has a very simple C interface, and gives the engine developer a lot of flexibility in the language itself.

Artists tend to love Lua too because it's very approachable, with plain and forgiving syntax.

Lua is free open-source software, distributed under a very liberal license (the well-known MIT license).

Pro

Cross-platform

Supports Windows, Mac OS X, Linux, Android and iOS.

Pro

Great for prototyping

You can learn the basics very quickly and start making simple games in no time, even if you have no previous Lua knowledge. If you're a little experienced with LÖVE, you can prototype a 2D game with it in no time.

Pro

Easy to understand and use

Lua2D handles loading the resources, reading input, playing sounds and displaying stuff on the screen. Only the logic is left for the developer to write. It also removes the overhead of having to use and learn a GUI game editor. All you need is a knowledge of Lua and your favourite text editor or IDE.

Pro

Open source and free

The LÖVE engine is licensed under The zlib/libpng License (which is very short and human readable) which allows you to use the source code and even modify it as long as you do not claim that the original source code is yours.

You can obtain the code at this bitbucket repository and even help fix bugs and participate in the development of LÖVE.

Pro

Can develop within Android

It is possible to develop games directly on a tablet or cellphone with the Android system by using the experimental Android branch.

Pro

Many examples and libraries with source code

There are plenty of open source examples of games or components built by the community that are ready to use or learn from.

Pro

Very good documentation

The LÖVE wiki provides full documentation of its easy to use Modules, which are conveniently located on the side bar of the wiki. It only takes seconds to find the module for love.keyboard, which provided a list of all functions along with arguments and examples where the function could be used.

Pro

Very good for education

That is a great tool for teaching novice programmers. Creating a game on LÖVE, you have to think about developing, not about the syntax of the language.

Pro

Many tutorials on the internet

Has several tutorials in several languages on the internet, mainly on Youtube.

Pro

Cute name

So much love.

Pro

C++ and Lua one of the best languages for gamedev

Because all professionals in gamedev use C++, and Lua the fastest scripting lang.

Pro

Lightning fast

It's the fastest gpu-based framework out there for flash. It's beautifully optimised. It has very low rendering latency, low level OpenGL calls that other tech simply cannot do (ie Unity) due to Stage3D, and thus can render a lot more data quicker

Pro

Cross-platform mobile, desktop and web

And with the HTML5 export, it also potentially supports development for the Wii U :)

Pro

Haxe!

Haxe is a strictly typed programming language that saves development time but still compiles high performance executables, and can build for tons of different platforms (flash, c++, html5, java, c#, etc.)

Pro

Access to direct draw features

Has access to direct draw features so you can make you own rendering structures (scene graphs etc).

Pro

Automatic dynamic batching

Pro

Component based architecture

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Cons

Con

Not very powerful

The engine has very few modules and only the really required one, you'll have to do almost everything from scratch.

Con

The community seems juvenile

For example, some of the library include names such as HUMP, LUBE, AnAL.

Con

Uses hg to version-control, not git

If the source codes were controlled by git, it would be more convenient for more programmers to contribute to Love2d.Using hg on bitbucket resulted in loss of tons of users.

Con

Documentation is very dry and technical

The site has plenty of tutorials, true, but they all read very technical, and explain very little. This might be too much for beginners, even for coding purposes, because of the fact that the specifics aren't explained well enough to learn effectively. The docs can be found frustrating to understand even the basics, such as tables or the like, because of how poorly they are explained, and how few examples are given before expecting you to be able to use them.

Con

Absolutely no GUI (no graphical interface)

This has no graphical interface at all, you have to know how to read script in order to know what you're looking at. After you've written the script for everything, you compile it to see the result. It's a very poor way to create a game, given how even most professional tools out there give you a GUI to work with and debug on the go. The lack of a GUI slows down the work by ten-fold, and it's just an inefficient use of your time.

Con

Lacks documentation

The API documentation is minimal, there's not many tutorials and the ones that are there are very small and only cover the basics. If you want to learn how to properly use it, you have to ask the community or read the source code and figure it out.

Con

Not too many games to showcase it

Con

Slow development rate

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